JOURNAL OF ALLOYS AND COMPOUNDS
·
2025
·
IF 6.3
Yan Jiang,Ping Wang,Ji Li,Xianfa Zhang,Yingming Xu,Hui Zhao,Xiaoli Cheng,Shan Gao,Lihua Huo
The porous and tubular structure is conducive to improving performance of sensing materials. At present, how to obtain sensitive materials with unique porosity and high surface activity by green, low-cost and simple synthesis methods is still a challenge. In this work, novel In 2 O 3 porous microtubes were obtained by water etching of MIL-68-In and calcination methods for the first time. The as-prepared microtubes exhibit excellent NO 2 sensitivity at 50 ℃ (S=156–3 ppm NO 2 ), and the limit of detection is 50 ppb. The sensor also has good NO 2 detection ability in the actual environment. The excellent NO 2 sensing performance at low temperature is closely related to high surface activity of In 2 O 3 porous microtubes. Combined with TPD, in-stiu DRIFT and XPS technologies, the NO 2 sensing mechanism was detailed analyzed. This work provides useful guidance for constructing high performance NO 2 sensor. The excellent NO 2 sensing performance at low temperature makes a positive contribution to promoting the application of metal oxide sensors in environmental detection.
✓ 已验证
产品关联
DOI
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2024
·
IF 4.9
Shu-Huan Chen,Huma Javeria,Xu-Hui Sun,Zhen-Xia Du
With the proliferation of vehicles in households, people are spending more and more time in their cars, so it is important to ensure the air quality and safety of the car. In this research, environmentally friendly, green PET@PDA@MIL-101(Fe) (PPM) was prepared by in-situ solvothermal growth and acid etching methods, which was categorized by SEM, FTIR, XRD, XPS, and BET. PPM was used to adsorb benzene, toluene, and m-xylene at low concentrations. The maximum amount of adsorption of PET@PDA@MIL-101(Fe) (PPM) for benzene, toluene, and m-xylene was 68.72 mg/g, 91.63 mg/g, and 78.47 mg/g respectively. The adsorption process of PPM is well fitted by the pseudo-first-order kinetic model and Langmuir isothermal adsorption model. Furthermore, PPM exhibited excellent toluene removal performance in simulated vehicles and excellent cycling capability in adsorption-desorption experiments. As a result, PPM can be used to treat and manage toluene volatile organic compounds (VOCs) at low concentrations.
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2024
·
IF 13.3
Yiting Lv,Jinjuan Xue,Zhaoxia Chen,Jianan Qu,Kaiwen Huang,Mingxin Wang,Wei Sun
Photocatalytic production of H 2 O 2 has garnered significant attention, but the use of sacrificial reagents in H 2 O 2 photosynthesis and the subsequent limited H 2 O 2 activation efficiency would impede its practical application in water decontamination. In this work, hydrothermal carbonaceous carbon/NH 2 -MIL-101(Fe) (abbreviated as HTC-cf/NMIL-101(Fe)) heterojunction was fabricated through a solvothermal strategy, and serving as a self-sufficient photo-Fenton-like catalyst to in-situ generate and activate H 2 O 2 . Hydrothermal carbonaceous carbon derived from cost-effective waste coffee grounds, serving as a green and sustainable photocatalyst, demonstrated high H 2 O 2 production rate of 612 μmol/g/h without the need for sacrificial reagents or aeration assistance. Moreover, the excellent self-sufficient photo-Fenton activity for HTC-cf/NMIL-101(Fe) can be obtained, which ascribed to the synergistic effect of self-generated H 2 O 2 production as well as the in-situ catalytic H 2 O 2 decomposition of • OH by Fe species in NMIL-101(Fe) and photogenerated electrons. The optimized HTC-cf/NMIL-101(Fe) photocatalyst showed simultaneous improvements in both H 2 O 2 production and activation capabilities. Impressively, the effective circulation of Fe 3+ /Fe 2+ in NMIL-101(Fe), aided by photogenerated electrons, results in a 5-fold increase toward H 2 O 2 decomposition rate constant (K d ) compared to HTC-cf alone under light irradiation in open-air conditions. The enhanced charge separation and appropriate band structure of HTC-cf/NMIL-101(Fe) photocatalyst assured the high selectivity of two-electron O 2 -reduction to H 2 O 2 . HTC-cf/NMIL-101(Fe) displayed excellent photocatalytic sterilization efficiency against E. coli and S. aureus under visible light, and its sterilization application in actual water was also demonstrated. Notably, the adaptability of this system to ambient conditions, including open-air atmosphere, non-sacrificial reagents, and low leaching of Fe ions, highlights the promising practical utility of the HTC-cf/NMIL-101(Fe) photocatalyst.
✓ 已验证
产品关联
DOI
高影响因子
CHEMOSPHERE
·
2024
·
IF 8.1
Jun Guo,Jun Hou,Zijun Yang,Jun Xia,Jun Wu,Guoxiang You,Lingzhan Miao
NH 2 -MIL-125(Ti) materials had great potential for photocatalytic applications but had low activity due to exciton effect and narrow absorption range of visible light. The surface oxygen-containing negative functional groups of boron nitride quantum dots (BNQDs) could overcome these defects, but due to the low load capacity, a higher specific surface area of the substrate was usually required. In this paper, a hollow Ti-MOF material was developed by etching technology. The hollow structure formed by tannic acid etching broadened the absorption range of visable light and provided more alternative surfaces for loading BNQDs. The 85.2% of high tetracycline (TC) removal efficiency for the best sample (BNQDs-5@20-Ti-MOF + PMS) was obtained, which was about 56.8 and 1.9 times of the 20-Ti-MOF and BNQDs-5@20-Ti-MOF, respectively. BNQDs-5@20-Ti-MOF + PMS system showed a great TC degradation efficiency in a wide pH range (pH = 5–9). In addition, reaction temperature and the inorganic ions did not show significant inhibition effect for TC removal. Both free radical and non-free radical pathways were involved in the TC degration by BNQDs-5@20-Ti-MOF + PMS system, among which O 2 •− and 1 O 2 played the key roles. Interestingly, multiple 1 O 2 production paths contributed to the high efficiency and stability of BNQDs-5@20-Ti-MOF + PMS system. This study revealed a reasonable combination of Ti-MOF and BNQDs, which provided a new efficient photocatalyst for environmental remediation.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
MICROCHEMICAL JOURNAL
·
2024
·
IF 4.9
Honglin Qin,Lizhen Qiao,Chen Li,Xiuchao Yao,Bingyan Han
In this work, a novel composite Fe 3 O 4 /NiAl LDH/MIL-125 (Ti) was developed through modifying the Ti-based MOF into magnetic NiAl LDH materials and applied to efficiently extract organophosphorus flame retardants (OPFRs) from water samples. The prepared Fe 3 O 4 /NiAl LDH presented good extraction efficiency for OPFRs, and, electrostatic interaction and π-π interaction also played an important role for the extraction process, except for the selective metal-affinity coordination between the adsorbents and OPFRs. Some key factors influencing the magnetic solid-phase extraction efficiency were explored, including adsorbent amount, ultrasound time, solution pH, salt content, the type of elution solvent and eluent volume. Under the optimal conditions, the coefficients of determination (R 2 ) of the OPFRs were 0.9976–0.9996, and the limits of detection (S/N = 3) and limits of quantification (S/N = 10) were respectively 0.3–1.0 μg·L −1 and 1.0–3.0 μg·L −1 . The developed approach was applied for the extraction and determination of OPFRs in the environmental water samples, and the spiked recoveries ranged from 82.79 % to 111.32 %.
✓ 已验证
产品关联
DOI
高影响因子
Journal of Environmental Chemical Engineering
·
2024
·
IF 7.4
Yingjie Guo,Jiayi Yan,Zan Chen,Cuijia Duan,Claudia Li,Yinhui Li,Sibudjing Kawi
The tendency of small-sized covalent organic framework (COF) nanoparticles to easily agglomerate, and the propensity of photo-generated carriers in α -Fe 2 O 3 to recombine pose challenges in the efficient removal of tetracycline (TC) through adsorption-photocatalysis synergy. This study addresses these challenges by introducing MIL-101, known for its excellent chemical stability and large specific surface area. The amino functional group facilitates the in-situ growth of acyl chloride-covalent organic framework (AC-COF) on the surface of MIL-101, resulting in the fabrication of AC-COF@MIL-101 with a core-shell structure. Loading α -Fe 2 O 3 through structural regulation leads to the preparation of the final α -Fe 2 O 3 /AC-COF@MIL-101 ternary nanocomposite. In α -Fe 2 O 3 /AC-COF@MIL-101 composites, the high surface energy of AC-COF is mitigated by the strong chemical energy of N C-N, reducing AC-COF aggregation and decreasing the recombination rate of photogenerated carriers in α -Fe 2 O 3 . The heterojunction structure between AC-COF@MIL-101 and α -Fe 2 O 3 enhances the degradation of TC, attributed to the synergistic effect of adsorption and photocatalysis. Experimental results demonstrate that α -Fe 2 O 3 /AC-COF@MIL-101 has a maximum adsorption capacity of 135.14 mg/g, achieving a 100% TC removal rate within 30 min. Compared to AC-COF, MIL-101, and α -Fe 2 O 3 , α -Fe 2 O 3 /AC-COF@MIL-101 exhibits higher adsorption capacity and photocatalytic activity. Specifically, its adsorption capacity is 2.1 times that of AC-COF, 1.8 times that of MIL-101, and 10.6 times that of α -Fe 2 O 3 . Additionally, its degradation ability is 8.6 times that of α -Fe 2 O 3 . The adsorption of TC by α -Fe 2 O 3 /AC-COF@MIL-101 occurs through monolayer chemical adsorption, and the process is exothermic. The main active species involved in the photocatalytic degradation process are h + and ·OH. This study introduces a new ternary composite multifunctional material with high adsorption and photocatalytic performance for TC, offering a potential strategy for enhancing the synergistically adsorption-photocatalytic effect in ternary composite systems.
✓ 已验证
产品关联
DOI
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2024
·
IF 4.9
Xueying Yang,Jian Zhang,Ming Xu,Xiangdong Zhang,Junlian Ren,Haina Bai
The advanced oxidation technology of persulfate has great potential in removing pollutants. Appropriate bimetallic activation method has obvious synergistic effect on the formation of free radicals and non-free radicals, and can also promote the electron transfer process. Therefore, in this paper, Ni was doped on the iron-based metal organic framework (MIL-88A) to form bimetallic catalyst and used as persulfate activator for oxytetracycline (OTC) degradation. The introduction of Ni increased the specific surface area of the catalyst and significantly improved its catalytic performance. Within 30 min, the degradation efficiency of 5 mg/L OTC reached 81.30%. The used catalyst can be simply recovered by standing, and the catalytic stability is high. The composition of main reactive oxygen species (ROS) in pollutant decomposition was clarified through the analysis of degradation mechanism. In addition to typical •OH、SO 4 •− and O 2 •− , non-free radical 1 O 2 was also generated. Based on LC-MS detection and toxicological experiments, the possible degradation pathways were proposed and the toxicity was analyzed. This material provides a new insight for activating PS to remove refractory organic compounds, and promotes the application of Fe-MOF materials in environmental pollution remediation.
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2025
·
IF 9.7
Liu Yang,Ruotong Li,Jiqing Zhang,Tao Zou,Xuekun Sui,Hongfan Huang,Yuhui Du,Enze Zhu,Xiaohui Guan,Haihui Yu,Penggang Yin,Guangsheng Wang
New-type and high-quality cathodes are of immense importance for the development of aqueous zinc-ion batteries (AZIBs). Herein, a core-shell structural iron-based metal organic framework (MIL-88) derived cathode (ZnFe 2 O 4 /Fe 3 O 4 /C@NC/Mo 2 TiC 2 T x ) with admirable specific capacity, rate performance, and cycling stability has been firstly designed and prepared. The in-situ adulterated Zn and loaded Mo 2 TiC 2 T x MXene could effectively modulate the electron distribution, facilitating the electron transfer from Fe and Zn to O atoms, which dramatically decrease the adsorption Gibbs energy for charge carriers and improve the electrical conductivity, leading to fast electrochemical kinetics. Moreover, the structural and chemical stability of the composites could be greatly improved by integrating MIL-88 derived doped carbon, polydopamine derived N-doped carbon coating, and MXene substrate. In addition, the unique core-shell and two dimensional/three dimensional hierarchical structure could provide plentiful active sites and optimize the charge storage kinetics. The synthesized electrode exhibits more excellent specific capacity of 467.9 mAh·g −1 than that of Fe 3 O 4 /C (143.5 mAh·g −1 ), Fe 3 O 4 /C@NC (166.4 mAh·g −1 ), and ZnFe 2 O 4 /Fe 3 O 4 /C@NC (225.6 mAh·g −1 ), as well as eminent rate performance and cycling stability. Additionally, the improved electrochemical performance and charge storage mechanisms of the cathode are revealed by characterizations, theoretical calculations, and simulations. The high-quality cathode and its designed strategy proposed in this study would promote the development and commercialization of AZIBs.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2025
·
IF 5.4
Zhengtao Zhu,Xi Deng,Yongqiang Ye,Na He,Bihe Yuan,Fei Xiao,Kaiyuan Li
To address the challenge of balancing fire safety and mechanical properties in thermoplastic polyurethanes (TPU), this study developed a CP@MIL-101 hybrid by confining liquid cyclic phosphates within the pore structure of MIL-101 using a hierarchical design strategy. The results demonstrated that the introduction of CP@MIL-101 slightly improved the thermal stability of TPU. Notably, the residual char yield increased significantly from 0.1 % to 9.3 % with only 0.5 % loading. With just 2 wt% loading of CP@MIL-101, the TPU composite achieved a UL-94 V-0 rating (3 mm) and exhibited a 20.4 % increase in the limiting oxygen index (LOI), reaching 26.0 %. Furthermore, significant reductions in peak heat release rate, total heat release, and fire growth rate index were observed, indicating enhanced fire safety of the TPU composites. Characterization analyses suggested that the improved fire retardancy resulted from the synergistic effects of MIL-101 and cyclic phosphates in both the condensed and gas phases, through the formation of a protective char layer and free radical quenching. Additionally, incorporating 2 wt% CP@MIL-101 endowed the TPU matrix with exceptional ultraviolet shielding properties due to unique electron transitions absorption. Simultaneously, the tensile strength of the TPU increased by 15.85 % compared to neat TPU, demonstrating mechanical reinforcement. This work establishes a strategic approach for developing multifunctional flame retardants and fire-safe TPU composites, paving the way for their application in high fire-safety environments.
✓ 已验证
产品关联
DOI
高影响因子
LANGMUIR
·
2025
·
IF 3.9
Changhua Li,Wei Liu,Yuquan Jing,Hao Yang,Qiuping Tang,Yongxu Cui,Chao Zhang,Wei Ren,Jing Zhang,Yi He
Metal–organic framework materials with large specific surface areas are ideal choices for storing corrosion inhibitors in organic coatings. Existing reports focus on materials such as ZIF-8 and ZIF-67, which release corrosion inhibitors by disintegrating themselves upon external stimuli. This release mechanism may lead to the formation of holes within the coating, providing channels for penetration into corrosive media. In this study, NH2-MIL 101 (Cr), which is stable under acidic/alkaline conditions, was grown on Ti3C2Tx surface via a hydrothermal method. Its porous structure was utilized to load environmentally friendly MoO42– corrosion inhibitors, and a stimulus-responsive TEOS shell was wrapped as a valve to control the release of the corrosion inhibitors. The synthesis of the Ti3C2Tx-MIL 101-MoO42–-TEOS (TMIT) composite material was verified by FT-IR spectroscopy and XPS, respectively. The TMIT-epoxy (TMITP) composite coating was prepared through a solid–liquid mixing method. The surface-active groups of NH2-MIL 101 (Cr) (−NH2) enhanced the interfacial strength with the resin and the crosslinking density, significantly increasing the tensile strength and adhesion strength of the composite coating. Due to the improved interfacial strength, the low-frequency impedance value remained at 4.14 × 108 Ω cm2 after 6 cycles of accelerated cyclic electrochemical tests (−4.0 V, 30 min), which greatly shortening the evaluation period of the coating performance. Additionally, the stimulus-responsive release mechanism of the TMIT filler endowed the coating with self-healing effects, achieving corrosion inhibition in damaged areas. Notably, the acid/alkali stability of NH2-MIL 101 (Cr) ensured that few holes would form within the coating after the release of corrosion inhibitors, preventing the penetration of corrosive media. This study utilized the pores of NH2-MIL 101 (Cr) to load corrosion inhibitors and prepare self-healing composite coatings, achieving intelligent release and enhancing the corrosion resistance of coatings, thus broadening the application strategy of MOF materials in corrosion protection coatings.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ENVIRONMENTAL RESEARCH
·
2024
·
IF 7.7
Xueyan Li,Lei Wang,Xin Zheng,Xiang Tu,Anhong Cai,Jing Deng
In this study, a UV-driven photocatalytic activation of peroxymonosulfate (PMS) system was constructed using bimetallic metal-organic frameworks to degrade pharmaceuticals and personal care products (PPCPs). Mn-MIL-53(Fe) was successfully synthesised by adjusting the doping ratio of Mn using solvothermal method. The removal of ibuprofen (IBP) by UV/Mn-MIL-53(Fe)/PMS process was as high as 79.7% in 30 min with a Mn doping ratio of 1.0 (molar ratio of Mn to Fe), and the reaction rate constant was 26.9% higher than undoped. Mn-MIL-53(Fe) had been systematically characterized in terms of its physical structure, microscopic morphology, surface functional groups and photoelectric properties. The mechanism investigation revealed that the cycling of Mn and Fe accelerated the rate of electron transfer in the system, which significantly increased the activation efficacy of PMS to generate more hydroxyl and sulfate radicals for IBP degradation. A total of 13 transformation products were detected during the degradation of IBP by the UV/Mn-MIL-53(Fe)/PMS process. Theoretical calculations were used to predict the sites on the IBP molecule that were vulnerable to attack, and four possible degradation pathways were deduced. The excellent stability and efficient catalytic properties of Mn-MIL-53(Fe) provided a promising solution to the problem of water treatment contaminated with PPCPs.
✓ 已验证
DOI
高影响因子
Nanoscale
·
2020
·Vol. 12
·期 7
·4552-4561
·
IF 6.895
Jing Yang,Bo Wang,Fan Jin,Yu Ning,Hao Luo,Jian Zhang,Fei Wang,Dianlong Wang,Yu Zhou
Lithium–sulfur batteries are promising candidates for the next generation of energy storage systems owing to their high energy density, low toxicity and abundant reserves of sulfur. However, sulfur has poor conductivity, large volume change during charge/discharge, and more importantly, the intermediate polysulfide (Li2Sn, 3 ≤ n≤8) produced in the cycling process is easily soluble in the electrolyte resulting in the “shuttle effect”, which have greatly limited the commercialization of lithium–sulfur batteries. Therefore, it is of great value to develop optimized sulfur cathode materials to improve electrode conductivity, buffer volume change and restrain the diffusion of polysulfide. In this work, we construct a V-MOF (MIL-47) derived V2O3@C hollow microcuboid with a hierarchical lasagna-like structure through hydrothermal synthesis followed by calcination, and employ it as a sulfur host for the first time. The fast anchoring of polysulfide by V2O3 nanoparticles and the high electronic conductivity of the 3D carbon framework can simultaneously inhibit the “shuttle effect” in the charge–discharge process and accelerate the kinetics of the redox process. Moreover, the special lasagna-like structure with appropriate voids generated during calcination not only provides many sites for sulfur loading, but also effectively alleviates the volume expansion problem during the electrochemical reaction. Therefore, the final fabricated sulfur cathode via the melt impregnation method exhibits good cycling stability (62.3% after 1000 cycles at 1C) and rate performance (663 mA h g−1 at 2C) at a relatively high sulfur loading of 3.7 mg cm−2.
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）